General tips to progress
I only buy the 5 dollar monthly card
If you are not uncollected, do not worry about alliance quest or alliance war. Full attention and focus needs to be for uncollected
If you are uncollected: do not worry about epic events, better use of your time is to do uncollected monthly event 100% and/or complete chapter 5.
Rank up who you want. Build teams around champs you like playing
Learn to see arena as part of your progression